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VH+ 011321

 
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immpy



Joined: 06 May 2017
Posts: 455

PostPosted: Wed Jan 13, 2021 3:43 pm    Post subject: VH+ 011321 Reply with quote

Hello all, enjoy the puzzle...

Code:

+-------+-------+-------+
| . . 6 | . . . | 1 . . |
| 8 2 1 | 9 3 6 | 4 . 7 |
| 7 5 3 | 4 . 8 | . 2 9 |
+-------+-------+-------+
| . . . | . 5 . | . . . |
| 6 . 2 | . . . | 5 . 8 |
| . 3 . | . . . | . 9 . |
+-------+-------+-------+
| . 6 . | . 4 . | . 1 . |
| . . . | 5 . 9 | . . . |
| . . 9 | . 2 . | 7 . . |
+-------+-------+-------+

Play this puzzle online at the Daily Sudoku site

cheers...immp
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dongrave



Joined: 06 Mar 2014
Posts: 443

PostPosted: Thu Jan 14, 2021 12:22 pm    Post subject: Reply with quote

Code:
+----------------+------------+-----------+
| 49   49    6   | 2   7 5    | 1 8   3   |
| 8    2     1   | 9   3 6    | 4 5   7   |
| 7    5     3   | 4   1 8    | 6 2   9   |
+----------------+------------+-----------+
| 149  14789 478 | 167 5 2    | 3 467 146 |
| 6    147   2   | 137 9 1347 | 5 47  8   |
| 145  3     457 | 167 8 147  | 2 9   146 |
+----------------+------------+-----------+
| 235  6     58  | 378 4 37   | 9 1   25  |
| 1234 147   47  | 5   6 9    | 8 34  24  |
| 345  48    9   | 138 2 13   | 7 346 456 |
+----------------+------------+-----------+

(5=8)r7c3-(8=4*)r9c2-(4=7)r8c3-(47=1)r8c2-(14*=7)r5c2-(7=4)r5c8-(4=3)r8c8-(34=6)r9c8-(4*6=5)r9c9 => r7c9 <> 5; stte.
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TomC



Joined: 30 Oct 2020
Posts: 109
Location: Wales

PostPosted: Thu Jan 14, 2021 1:06 pm    Post subject: Reply with quote

My solution was to eliminate the 1 in r8c1

as in box 7 you would have 47 pair giving r9c2=8 r7c3=5 and r7c9=2
thus no 2's in box7
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ZeroAssoluto



Joined: 05 Feb 2017
Posts: 632
Location: Rimini, Italy

PostPosted: Thu Jan 14, 2021 2:06 pm    Post subject: Reply with quote

Hi everyone,

XY-Chain r9c2 - 8 - r7c3 - 5 - r7c9 - 2 - r8c9 and -4 in r8c123,r9c89

and a Naked Pair

Ciao Gianni
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